Mine is a year 2000, but yes i have heard that I should stay under 300 bhp because of the rods.

Thought to install larger turbo, but will stay away.

"RN Series Inline 5-Cylinder 1999-2001
The early version of the RN block have lighter valve train components that is primarily a function of thinner valve stems and a solid valve train vs. the earlier hydraulic system in 1998 and earlier models. Be advised some early 1999 models still had hydraulic lifters so check your engine serial number to be sure. These early RN motors were also better able to handle higher RPM limits and better cylinder head flow from both the CVVT and the thinner valve stems taking up less room in the head intake runners. Rods were still a bit on the weak side which keeps this engine rated to approx. 315bhp in stock form"